Casall INFINITY 1.2X Manual page 15

Slide the Upper handlebar post (C-1,C-4) (R/L) into the Lower handlebar (E-1)
STEP 8
and then fix with the eight Allen bolts (P-8)
1*
STEP 9
Connect the adaptor (N) to the DC hole (located on the back of the chain cover).
E-1
8*
M8*12L
15